October 5, 20205 yr I have a question on UDMA CRC error count. I have one drive that the error count increases at every parity check. When I run an extended SMART test (attached), the results return as a "Pass". Should I be concerned? I have pre-cleared unassigned drives I can swap into the array if there is a concern. Thanks in advance. SH hal-9000-smart-20201005-1134.zip
October 5, 20205 yr Community Expert 6 minutes ago, ShangHangin said: UDMA CRC error These are connection problems not disk problems Diagnostics might give more information about the connection
October 5, 20205 yr Author Diagnostics attached. Advice appreciated. SH hal-9000-diagnostics-20201006-0638.zip
October 6, 20205 yr As @trurl said, it is most likely a bad connection, try to replace the signal cable (SATA/SAS).
October 8, 20205 yr Author Thanks - check and changed the cable, no increase in the error count. Seems corrected - will monitor. Any way to clear the error count so that is does not keep popping up as an error?
October 8, 20205 yr Community Expert No way to reset the count, it is recorded in the drive firmware. On the Dashboard page, click on the SMART warning for the disk and you can acknowledge it. It will warn again if the count increases.
October 12, 20205 yr Hi - can anything else cause this error? We (trurl and I) talked months ago - I replaced the SATA cable - fine for 3-7 parity checks. Now it starts counting again - always 1 error count per parity check. I can't belive that the new cable cause this error again.
October 12, 20205 yr Author I have changed a re-seated cables on the one drive I had the issue. Have reset the counters, run a parity check, no issues (an a test of one). Will continue to monitor.
September 15, 20214 yr I have the same issue with my Samsung 860 EVO 4 TB in my Mac Pro 5.1 from 2012. The number of errors are increasing all the time. I have another SSD, Samsung 850 EVO 2 TB, without this issue. Both are installed on pcie-cards on the logic board (4 slots). I have also tried with installing the EVO 860 in ordinary HDD-bay but the issue didn’t go away. Is 860 more demanding regarding speed than 850? This old computer has only pcie-2 (USB 2.0) and that can’t be changed. I would gladly retire this machine, but if I want to stay with Mac, what options do I have? My wish is the new Mac Pro from 2019 but the cost is far too high (5 999 US Dollars in starting price). This computer was bought in April 2013 and was almost old when it was new. And then came Trash-can that autumn. I was shocked. How could they build such a machine? It was ugly and not upgradable.
July 12, 20232 yr On 10/8/2020 at 2:56 AM, trurl said: On the Dashboard page, click on the SMART warning for the disk and you can acknowledge it. It will warn again if the count increases. Thanks for this- there's no way I would've guessed to click on that warning. Good to see all green dots again.
July 12, 20232 yr Community Expert 44 minutes ago, -C- said: Thanks for this- there's no way I would've guessed to click on that warning. Good to see all green dots again. Don't just make the warning go away. An occasional CRC is OK to acknowledge. Any other type of warning might be a serious disk problem.
July 12, 20232 yr 5 minutes ago, trurl said: Don't just make the warning go away. An occasional CRC is OK to acknowledge. Any other type of warning might be a serious disk problem. Understood, thanks. (PS- I meant green thumbs, not dots)
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